CN107007381A - Artificial limb - Google Patents
Artificial limb Download PDFInfo
- Publication number
- CN107007381A CN107007381A CN201710247282.9A CN201710247282A CN107007381A CN 107007381 A CN107007381 A CN 107007381A CN 201710247282 A CN201710247282 A CN 201710247282A CN 107007381 A CN107007381 A CN 107007381A
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- CN
- China
- Prior art keywords
- motion bar
- artificial
- piston
- cylinder body
- leg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000002414 leg Anatomy 0.000 claims abstract description 59
- 210000003414 extremity Anatomy 0.000 claims abstract description 39
- 238000013016 damping Methods 0.000 claims abstract description 21
- 210000003127 knee Anatomy 0.000 claims abstract description 18
- 210000001037 metacarpus Anatomy 0.000 claims description 10
- 210000000689 upper leg Anatomy 0.000 claims description 9
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 210000003205 muscle Anatomy 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/60—Artificial legs or feet or parts thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/60—Artificial legs or feet or parts thereof
- A61F2/64—Knee joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/60—Artificial legs or feet or parts thereof
- A61F2/66—Feet; Ankle joints
- A61F2/6607—Ankle joints
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/60—Artificial legs or feet or parts thereof
- A61F2002/607—Lower legs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/60—Artificial legs or feet or parts thereof
- A61F2002/608—Upper legs
Abstract
The invention discloses a kind of artificial limb, including：Pseudopod；Artificial leg, the upper end of artificial leg is provided with the pole of extension tilted backwards；The upper end pivot joint of first motion bar, its lower end and artificial leg；The upper end pivot joint of second motion bar, its lower end and pole；The upper end of prosthetic knee, the upper end of the first motion bar and the second motion bar is articulated in two positions of prosthetic knee in the longitudinal direction respectively, and the first motion bar is located at the front of the second motion bar；Telescoping cylinder, it includes cylinder body and piston rod, and the lower end of cylinder body and the lower end of the first motion bar are pivotally connected, and piston rod stretches out from the upper end of cylinder body and is coaxially pivotally connected with the second motion bar, wherein：The upper chamber and bottom chamber that piston in cylinder body is divided into are provided with spring, and two springs push against the damping hole that connection upper and lower chamber is offered on piston, piston.The present invention improves the stability that disabled person is walked using artificial limb.Telescoping cylinder more can guarantee that the stabilization of artificial limb compared with being applied to the torsion spring of artificial limb in the prior art.
Description
Technical field
The present invention relates to a kind of artificial limb, more particularly to a kind of artificial limb applied to the disabled person lacked below thigh.
Background technology
For the disabled person lacked below thigh, by installing artificial limb disabled person can be made to stand and walk again.Existing skill
Artificial limb in art applied to the disabled person lacked below thigh generally includes a pseudopod, artificial leg (referring to shank) and prosthetic knee.It is existing
There is the annexation of above-mentioned each part of artificial limb in technology as follows：
Pseudopod is pivotally connected with artificial leg, and prosthetic knee is pivotally connected with artificial leg；It is respectively provided between pseudopod and artificial leg and between prosthetic knee and artificial leg
Two-way torsion spring, and by adjusting two-way torsion spring so that pseudopod, the free relative attitude of artificial leg and prosthetic knee and normal person
The relative attitude of foot, leg and knee is consistent, and two-way torsion spring causes pseudopod with artificial leg and prosthetic knee and artificial leg in both direction
Necessarily damped during pivot, and a determined power is provided by the resilience of torsion spring, it is this that damping is both provided, it is false that power is provided again
Limb enables artificial limb to simulate posture, power and motion when people walks substantially.
However, above-mentioned artificial limb of the prior art not fully meets posture, power and the motion when normal person walks.
For example, above-mentioned artificial limb has two pivot joints, two are pivotally connected the walking made and are not sufficiently stable.Also, provide resistance using torsion spring for artificial limb
Buddhist nun and power have certain danger, for example, when torsion spring is twisted off suddenly, can be produced compared with big angle between pseudopod, artificial leg and prosthetic knee
The rotation of degree, causes disabled person to fall suddenly.
The content of the invention
For above-mentioned technical problem present in existing technology, of the invention implements there is provided a kind of artificial limb.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of artificial limb, applied to the disabled person lacked below thigh, including：
Pseudopod；
Artificial leg, its lower end is fixedly connected with the pseudopod, and the upper end of the artificial leg is provided with the pole of extension tilted backwards；
First motion bar, its lower end and the upper end of the artificial leg are pivotally connected；
Second motion bar, its lower end and the upper end of the pole are pivotally connected；
Prosthetic knee, it has the mounting surface docked with thigh lower end, and the upper end of first motion bar and described second live
The upper end of lever is articulated in two positions of the prosthetic knee in the longitudinal direction respectively, and first motion bar is located at described the
The front of two motion bars；
Telescoping cylinder, it includes cylinder body and piston rod, and the lower end of the cylinder body and the lower end of first motion bar are pivotally connected, institute
Piston rod is stated to stretch out and be coaxially pivotally connected with second motion bar from the upper end of the cylinder body, wherein：
The upper chamber and bottom chamber that piston in the cylinder body is divided into are provided with spring, and spring is pushed against described in two
The damping hole of connection upper and lower chamber is offered on the piston, the piston.
Preferably, the pseudopod includes main part, preceding metacarpus and rear heel；The lower end of the artificial leg and the main part
It is fixedly connected, the preceding metacarpus is the arc extended downwardly before being tilted towards from the main part, the rear heel is to be fixed on
The main part lower end and the reverse bent plate that bends backward.
Preferably, the preceding metacarpus and rear heel are made by spring steel.
Compared with prior art, the beneficial effect of artificial limb of the invention is：The present invention by the length change of telescoping cylinder and
Quadric chain provides power and damping for the swing of artificial leg, so as to improve the stabilization that disabled person is walked using artificial limb
Property.The telescoping cylinder of flexible Telescopic more can guarantee that the steady of artificial limb compared with being applied to the torsion spring of artificial limb in the prior art
It is fixed.
Brief description of the drawings
Fig. 1 is the structural representation at a visual angle of the artificial limb of the present invention；
Fig. 2 is the structural representation at another visual angle of the artificial limb of the present invention；
Fig. 3 is the structural representation after the artificial limb simplification of the present invention (artificial leg is in rear pendulum state)；
Fig. 4 is the structural representation after the artificial limb simplification of the present invention (artificial leg is in forward swing state)；
Fig. 5 is the internal structure schematic diagram of the artificial limb of the present invention；
Fig. 6 is Fig. 5 local A zoomed-in view.
In figure：
10- pseudopods；11- main parts；Metacarpus before 12-；13- rear heels；20- artificial legs；21- poles；30- prosthetic knees；40- first
Motion bar；The motion bars of 50- second；60- telescoping cylinders；61- cylinder bodies；62- pistons；63- piston rods；The upper springs of 64-；65- lower springs；
621- damping holes；The check valves of 622- first；The check valves of 623- second.
Embodiment
To make those skilled in the art be better understood from technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
Formula elaborates to the present invention.
As depicted in figs. 1 and 2, embodiment of the invention discloses that a kind of artificial limb, applied to the deformity lacked below thigh
People, the artificial limb includes：Pseudopod 10, artificial leg 20, prosthetic knee 30, the first motion bar 40, the second motion bar 50；Wherein, under artificial leg 20
End is fixedly connected with pseudopod 10, and the upper end of artificial leg 20 is provided with the pole 21 of extension tilted backwards；The lower end of first motion bar 40
It is pivotally connected with the upper end of artificial leg 20；The lower end of second motion bar 50 is pivotally connected with the upper end of pole 21；Prosthetic knee 30 has and thigh lower end
The upper end of the mounting surface of docking, the upper end of the first motion bar 40 and the second motion bar 50 is articulated in prosthetic knee 30 in front and back respectively
Two upward positions, and the first motion bar 40 is located at the front of the second motion bar 50；Telescoping cylinder 60 includes cylinder body 61 and piston
Bar 63, the lower end of the lower end of cylinder body 61 and the first motion bar 40 is pivotally connected, and piston rod 63 stretches out from the upper end of cylinder body 61 and with second
Motion bar 50 is coaxially pivotally connected, and the piston 62 being located on piston rod 63 in cylinder body 61 will be divided into upper chamber and lower chambers in cylinder body 61,
Spring 64, bottom chamber are provided with upper chamber and is provided with lower spring 65, and the coefficient of elasticity and lower chambers phase of upper spring 64
Together, the damping hole 621 of insertion upper chamber and lower chambers is further opened with piston 62.
Understood according to above-mentioned, one is formd between the first motion bar 40, the second motion bar 50, pole 21 and prosthetic knee 30
Each connecting rod in four Lian Ge mechanisms, the quadric chain can realize the swing of artificial leg 20 by changing space angle,
And swing angle is determined by the maximum length and minimum length of telescoping cylinder 60.The swing of artificial leg 20 and the leg row of normal person
Walk posture close.Above-mentioned telescoping cylinder 60 adapts to the swing of artificial leg 20, upper chamber by changing the length of the stretching of piston rod 63
Interior upper spring 64 and the lower spring 65 of lower chambers provide power and resistance simultaneously to the swing of artificial leg 20, for example, when piston 62
During slide downward, lower spring 65 compresses, and upper spring 64 extends, and lower spring 65 is that piston 62 provides damping, and upper spring 64 is piston
62 provide power；When 62 upward sliding of piston, upper spring 64 compresses, and lower spring 65 extends, and upper spring 64 is that piston 62 is provided
Damping, lower spring 65 is that piston 62 provides power.Damping hole 621 is used to connect upper chamber and lower chambers so that piston 62 is moved into
For possibility, i.e. make it possible that artificial leg 20 is swung, it is often more important that also the slip for piston 62 provides damping, i.e. be artificial leg
20 swing provides damping, artificial leg 20 is relatively smoothly swung.
The present invention provides power and damping by the length change and quadric chain of telescoping cylinder 60 for the swing of artificial leg 20,
So as to improve the stability that disabled person is walked using artificial limb.The telescoping cylinder 60 and prior art of flexible Telescopic
In be applied to artificial limb torsion spring compare, more can guarantee that the stabilization of artificial limb.
People is during normal walking, when people's leg (referring to shank) is put afterwards before swing speed, loading process and the people's leg of leg
The swing speed of leg, loading process are different during pendulum.When being put after people's leg, the swing speed backward of leg is smaller, but muscle is held
The pressure of load is larger, during people's leg forward swing, and the swing speed forward of leg is larger, but muscle make it that the power of leg forward swing is smaller.
(this is two attached for the overall posture for put such as Fig. 3 and Fig. 4 artificial limbs for respectively illustrating the present invention after artificial leg 20 during with forward swing
Figure is the motion principle figure that artificial limb simplifies).When being put after artificial leg 20, the length of telescoping cylinder 60 is stretched when being less than 20 forward swing of artificial leg
The length of cylinder 60, that is to say, that during pendulum is switched to the forward swing of artificial leg 20 after artificial leg 20, piston rod 63 constantly stretches out, living
Plug 62 is moved up；Switched to from the forward swing of artificial leg 20 during being put after artificial leg 20, piston rod 63 constantly bounces back, piston 62 is moved down.It is real
On border, during using prosthetic walking, the muscle of telescoping cylinder 60 also after the shank in normal person, when forward swing, muscle is stretched
Long, when rear pendulum, muscle shortens.
The characteristics of having above-mentioned analysis due to the walking of normal person, when walking, telescoping cylinder 60 has artificial limb of the invention
Above-mentioned flexible feature, therefore, meets the walking posture of normal person, at one of the present invention to make prosthetic walking of the invention try one's best
In preferred embodiment, as shown in Fig. 3 to 6, multiple check valves 623 of first check valve 622 and second are set on piston 62；And make
The air inlet of first check valve 622 is connected with lower chambers, and gas outlet is connected with upper chamber；The air inlet of second check valve 623 with
Upper chamber is connected, and gas outlet is connected with lower chambers, and causes through-current capacity when the first check valve 622 is opened to be less than the second check valve
Through-current capacity during 623 unlatching, the Opening pressure of the first check valve 622 is more than the Opening pressure of the second check valve 623.In this way,
As shown in figure 3, when being put after artificial leg 20, the gas pressure of bottom chamber is more than the gas pressure in upper chamber, the second check valve
623 close, and a gas part for bottom chamber enters upper chamber by damping hole 621, and because damping hole 621 is smaller, cavity of resorption
Indoor pressure continues to increase, and when increasing to certain numerical value, the gas of bottom chamber causes the first check valve 622 to open, under
Gas in chamber enters upper chamber by the first check valve 622 and damping hole 621 simultaneously, in whole process, due to damping hole
621 and first check valve 622 circulation it is smaller, so as to move down the larger damping of offer for piston 62, and then make to stretch
The retraction of cylinder 60 provides larger damping, so that the rear slew rate degree of artificial leg 20 is slower, more conforms to the rear pendulum of the shank of normal person
Speed；As shown in figure 4, when 20 forward swing of artificial leg, the gas increase in upper chamber, the first check valve 622 is closed, due to the second list
Opening pressure to valve 623 is smaller, therefore, and the second check valve 623 is opened immediately, and the gas in upper chamber passes through damping hole simultaneously
621 and second check valve 623, and because the circulation of the second check valve 623 is larger so that air comparatively fast enters from upper chamber
Enter lower chambers, so that piston 62 can be moved up quickly, the suffered damping of piston 62 is smaller, and the stretching of telescoping cylinder 60 is obstructed
Buddhist nun is smaller, so that the speed of artificial limb forward swing is larger, more conforms to the forward swing speed of the shank of normal person.
Understood according to above-mentioned, due to being provided with installation direction, Opening pressure and the first different check valve 622 of circulation
With the second check valve 623 so that artificial leg 20 is in rear pendulum, and speed is slower, the speed in forward swing, so that artificial limb is more accorded with
Ergonomics is closed, close to the walking posture of normal person.
In a preferred embodiment of the invention, as depicted in figs. 1 and 2, pseudopod 10 includes main part 11, preceding metacarpus
12 and rear heel 13；The lower end of artificial leg 20 is fixedly connected with main part 11, preceding metacarpus 12 be main body 11 be tilted towards before to
The arc of lower extension, rear heel 13 is reverse bent plate that is being fixed on the lower end of main part 11 and bending backward.
Preferably, preceding metacarpus 12 and rear heel 13 are made by spring steel.
Although with reference to illustrative embodiments, invention has been described, but it is to be understood that the present invention does not limit to
The embodiment that Yu Wenzhong is described in detail and shown, in the case of without departing from claims limited range, this
Art personnel can make various changes to illustrative embodiments.
Claims (3)
1. a kind of artificial limb, applied to the disabled person lacked below thigh, it is characterised in that including：
Pseudopod；
Artificial leg, its lower end is fixedly connected with the pseudopod, and the upper end of the artificial leg is provided with the pole of extension tilted backwards；
First motion bar, its lower end and the upper end of the artificial leg are pivotally connected；
Second motion bar, its lower end and the upper end of the pole are pivotally connected；
Prosthetic knee, it has the mounting surface docked with thigh lower end, the upper end of first motion bar and second motion bar
Upper end be articulated in two positions of the prosthetic knee in the longitudinal direction respectively, and first motion bar is located at described second and lived
The front of lever；
Telescoping cylinder, it includes cylinder body and piston rod, and the lower end of the cylinder body and the lower end of first motion bar are pivotally connected, the work
Stopper rod stretches out from the upper end of the cylinder body and is coaxially pivotally connected with second motion bar, wherein：
The upper chamber and bottom chamber that piston in the cylinder body is divided into are provided with spring, and spring described in two pushes against described
The damping hole of connection upper and lower chamber is offered on piston, the piston.
2. artificial limb according to claim 1, it is characterised in that the pseudopod includes main part, preceding metacarpus and rear heel；
The lower end of the artificial leg is fixedly connected with the main part, and the preceding metacarpus is extended downwardly before being tilted towards from the main part
Arc, the rear heel is reverse bent plate that is being fixed on the main part lower end and bending backward.
3. artificial limb according to claim 2, it is characterised in that the preceding metacarpus and rear heel are made by spring steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247282.9A CN107007381B (en) | 2017-04-14 | 2017-04-14 | Artificial limb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710247282.9A CN107007381B (en) | 2017-04-14 | 2017-04-14 | Artificial limb |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107007381A true CN107007381A (en) | 2017-08-04 |
| CN107007381B CN107007381B (en) | 2018-11-20 |
Family
ID=59448303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710247282.9A Expired - Fee Related CN107007381B (en) | 2017-04-14 | 2017-04-14 | Artificial limb |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107007381B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI678197B (en) * | 2018-07-17 | 2019-12-01 | 東南科技大學 | Sub-knee prosthetic structure with replaceable parts |
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| TWI678197B (en) * | 2018-07-17 | 2019-12-01 | 東南科技大學 | Sub-knee prosthetic structure with replaceable parts |
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